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| <h3 class="section">2.4 <code>abs</code>—integer absolute value (magnitude)</h3> |
| |
| <p><a name="index-abs-5"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <stdlib.h> |
| int abs(int <var>i</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| <code>abs</code> returns |
| the absolute value of <var>i</var> (also called the magnitude |
| of <var>i</var>). That is, if <var>i</var> is negative, the result is the opposite |
| of <var>i</var>, but if <var>i</var> is nonnegative the result is <var>i</var>. |
| |
| <p>The similar function <code>labs</code> uses and returns <code>long</code> rather than <code>int</code> values. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| The result is a nonnegative integer. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| <code>abs</code> is ANSI. |
| |
| <p>No supporting OS subroutines are required. |
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